Tread portion of an automobile tire



FIG. 1 is a perspective view of tread portion of an automobile tire showing my design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side of view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a fragmentary enlarged front view showing the details of the tread portion thereof;

FIG. 8 is a section view taken along line 8-8 in FIG. 7;

FIG. 9 is a section view taken along line 9-9 in FIG. 7;

FIG. 10 is a section view taken along line 10-10 in FIG. 7;

FIG. 11 is a perspective view of tread portion of an automobile tire according to a second embodiment of my design;

FIG. 12 is a front view thereof;

FIG. 13 is a top view thereof;

FIG. 14 is a right side view thereof;

FIG. 15 is a left side of view thereof;

FIG. 16 is a rear view thereof;

FIG. 17 is a fragmentary enlarged front view showing the details of the tread portion thereof; and

FIG. 18 is a section view taken along line 18-18 in FIG. 17.

FIG. 19 is a section view taken along line 19-19 in FIG. 17; and,

FIG. 20 is a section view taken along line 20-20 in FIG. 17.

The broken lines are used to show portions of the tire that are not being claimed, and thus form no part of the claimed design. 

CLAIM The ornamental design for a tread portion of an automobile tire, as shown and described. 